/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.model.rete;

import com.bstek.urule.RuleException;
import com.bstek.urule.model.rule.Value;
import com.bstek.urule.runtime.rete.Context;
import org.apache.commons.beanutils.BeanUtils;
import org.codehaus.jackson.annotate.JsonIgnore;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;


/**
 * @author Jacky.gao
 * @since 2015年1月6日
 */
public abstract class BaseReteNode extends ReteNode {
    protected List<Line> lines;
    @JsonIgnore
    private List<ReteNode> childrenNodes = new ArrayList<ReteNode>();

    public BaseReteNode(int id) {
        super(id);
    }

    public List<ReteNode> getChildrenNodes() {
        return childrenNodes;
    }

    public void setChildrenNodes(List<ReteNode> childrenNodes) {
        this.childrenNodes = childrenNodes;
    }

    protected boolean buildVariables(Context context, Value value, Map<String, Object> variableMap) {

        return true;
    }

    protected Object fetchData(Object object, String property) {
        try {
            return BeanUtils.getProperty(object, property);
        } catch (Exception e) {
            throw new RuleException(e);
        }
    }

    public Line addLine(ReteNode toNode) {
        if (childrenNodes == null) {
            childrenNodes = new ArrayList<ReteNode>();
        }
        childrenNodes.add(toNode);
        Line line = new Line(this, toNode);
        if (lines == null) {
            lines = new ArrayList<Line>();
        }
        lines.add(line);
        if (toNode instanceof JunctionNode) {
            JunctionNode junctionNode = (JunctionNode) toNode;
            junctionNode.addToConnection(line);
        }
        return line;
    }

    public List<Line> getLines() {
        return lines;
    }

    public void setLines(List<Line> lines) {
        this.lines = lines;
    }
}
